This mod will bring 3 sides to the battle: GDI, Nod and Mutants. It will also feature new graphics, units, sounds and kevin schlueter (the leader) also says that there will be a new terrain on it. The mod isn't that new and it has been under development for some time already.
Kevin will post more info about this mod here in the forums. Here's the pictures that we managed to gather so far:



Current site about this mod can be found at: http://www.leukos.net/coda/